All cut india manufactures portable magnetic drilling machines of 50 mm capacity with main advantages like drilling machines is that even unskilled persons can operate them. The machines cut only the borders with broach cutters and thus save inside material, rather than with only a 24 kg of machine making up to 50 mm diameter hole in 50 mm depth without any pilots in single pass with only normal pressure. The machines are three to four times faster than twist drills and suitable for heavy construction and big jobs of drilling. Cutters are attached with the machine spindles, which run in needle bearing guides to remove the vibration and get holes with high surface finish. High frequency electro-magnetic base is provided for quick and perfect clamping on all the jobs from 18 to 50 mm holes and can be easily used the in vertical, horizontal and in overhead position. Additional attachements can be used for drilling on pipe and radish surface.